User's Manual

Grounding electrode system
Grounding electrode system requirements
9927 Distributed Base Station Outdoor Cabinet sites must be equipped with a grounding
electrode system (that is, buried ring ground, copper clad rod, electrolytic rods, metallic
water pipe, etc.). The cell site grounding, including all cabinets and antenna cable shields,
must be bonded to the grounding electrode system.
The grounding electrode system shall be installed as part of site preparation with a
sufficient number of pigtails. Electrically conductive materials in the vicinity that are
likely to become energized must be connected together and to the grounding electrode
system in a manner that establishes an effective ground-fault current path.
Buried ground conductors must be, at a minimum, 33.6 mm
2
(2 AWG) bare, solid, tinned
copper wire. Exterior ground conductors must be, at a minimum, 33.6 mm
2
(2 AWG)
either solid, bare, tinned copper or stranded, insulated (outdoor insulation to be
sunlight-resistant) copper cable.
Exothermic weld
Exothermic weld is recommended for grounding connections where practical. All
below-grade connections must be exothermically welded. Compression type, two-hole
(0.75-inch center) lugs or double crimp “C” taps are acceptable for above-ground
connections. The contact area where connections are made shall be prepared to a bare
bright finish, and be coated with an anti-oxidation material before connections are made.
Important! All grounding system material (cable, connectors, buses, etc.) must be of
high quality materials that resist deterioration and require little or no maintenance.
Grounding and lightning protection requirements for 9927
Distributed Base Station Outdoor Cabinet
Grounding electrode system
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12-6
Alcatel-Lucent – Proprietary
Use pursuant to applicable agreements
9927 Dist BTS Outdoor
401-703-516
Issue 1 March 2012